Board Backed & Full Board Envelopes

C6 - to take A6 Board backed C6 - to take A6 Full Board C5 - to take A5 Board backed C5 - to take A5 Full Board C4 - to take A4 Board back C4 - to take A4 Full Board C3 - to take A3 Board Backed C3 - to take A3 Full Board 249mm x 352mm B4 - A4 Plus - Full Board